I'm looking forward to seeing someone come out with something really exciting and innovative. We're probably going to have to give folks a few weeks to roll out something really radical. I've already seen a few glimpses of brilliance (the Quartz UI, of course. And Oguler's spell book skin). I think as the weeks go by, we're going to see some amazing stuff.
As far as the percentages go, I definitely agree that they are being way overused, at least for my taste. Although I must admit, the first mod that I loaded into my UI was a player info window with a numerical mana percent. That number in particular is one that I work with so much when I'm in group, that I really found it useful. Beyond that though, the bars are just fine for me. When I'm down to one bubble of health, I don't need a numerical percentage to confirm for me that I'm in trouble
Thil